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F. w. BECKER WELDING AND CUTTING APPARATUS May 1, 192s.

1927 2 Sheets-Sheet 1 Original Filed March 2.

INVENTOR w@ .M ATTORNEYS 2 Sheets-Sheet 2 s U T A R A w mA KG Bm .C Wm A FG N I D L E w 8. 2 9 1l L y m ramal F w W ww INVENTOR Eer/evzcl W. en/eel ,meal/rm/ /fwa ATTORNEYS Reissued May 1, 1928.

PATENT OFFICE..

FREDERICK W. BECKER, F EAST RUTHERFORD, NEW JERSEY.

WELDING AND CUTTING APPARATUS.

Original No. 1,633,359, dated June 21, 1927, Serial No. 171,970, led March 2, 1927. Application for reissue filed February 13,

My invention relates to apparatus for Welding and cutting purposes, and its general working principle consists in feeding a mixture of oxygen and liquid fuel under pressure to a burner through specially constructed tubing in which the fuel automatically evaporates and in conjunction with the oxygen supplies a regulated flame which serves the desired purpose.. The pressure is brought onto the liquid fuel by i'neaus of an air pump installed in the fuel container in the ordinary manner as with Soldering lamps. In devices of this character it is important to control or regulate the flow of gases so as to-obtain a proper mixture of the same according to the Work to be performed7 and a further object of my invention is to provide means for so doingand furthermore to effect economy of the gases by stopping their flow when the apparatus is not in use, and again giving passage to the gases when the apparatus is to resume Work.v

The details of the construction and operation of my improved apparatus are hereinafter particularly described.

1n the accompanying drawiugs2- Figure 1 is a side view of a welding appa` ratus embodying my invention, partly in section and broken away in length.

Fig. 2 is an enlarged cross section on .the broken line 22 of Fig. 1.

Fig. 3 is an enlarged cross section on the broken line 3 3 of Fig. 1.

Fig. 4c is a similar view to Fig. 1 showing the improved welding device provided with au attachment for cutting purposes,

Fig. 5 is a top view of the same partly in section, with the foulard end broken oft'.

Fig. 6 is a section on the line 6 6 of Fig. 4, and

Fig. 7 is a detailed view of the trigger valve shown in Figs. l and 5. l

Referring to the Figs. 1. 22 and E of the drawings, 10 indicates a cylindrical sleeve forming the handle of the instrument.

Into the rear end of the handle is fitted a block 11 having an exteriorly threaded nipple 12 projecting inwardly of the handle, and an interiorly threaded recess 13 in its outer side into which isscrewed a plug 14 yrojecting from a valve chamber 15 there seing a bore through the plug 14, block` 11,

1928. Serial No. 254,117.

and nipple 12 communicating with the valve chamber 15. Another exteriorly threaded nipple 16 extends from the opposite side of the valve chamber 15 being provided with a bore into which enters one end of a flexible tube 17 secured by a lock nut 18. -This tube 1T extends to an oxygen tank (not shown).

A curved or elbow-shaped bore 19 is formed in the block 11. one end ot' which communicates with the bore in the plug 14 and into the other endof this bore 19 one end of an oxygen tube-2O is slidably entered. there being a stutlng boi; 21 screwed upon the threaded nipple 12 on the block 11 which prevents leakage of the oxygen at such connection.

A block 22 is fitted into the forward end of the handle 1() having an exteriorly threaded nipple 23 extending inwardly of the handle, there being a bore through this 'nipple and the block 22, through which the tube extends, a stuiling box 24. being screwed over the nipple 23. That portion of the block 22 extending beyond the handle l() is preferably somewhat reduced in diameter and extcriorly threaded having a recess 25. )nc end of a tube 26 is seated against the recessed end of the block 22 and is held in position by a nut. 27 screwed over the threaded end of the block 22 and against the annular flange 28 on the tube 26.

Within the tube 26 and bearing against the same is another tube 29 extending the Whole length of the tube 26.

Fitted Within the forward end of the tube 29. is a valve casing 30, exteriorly7 threaded into which the forward end of the tube 21) extends. This casing 30 is also partly threaded ,interim-ly. there. being a threaded collar 3l fixed to the tube 2() engaging such iuteriorly threaded portion of the casing 30. This collar 31 is provided with spaced longitudinal slots for the purpose hereafter described. l

Upon the extreme forward end of the oxygen tube 20 is fixed a. valve 33, which may be adjusted nearer to or further from its seat 34 to regulate the flow of gases by means hereafter described.

The burner head 35, is removably con* nected to the valve casing 30 by a nut 36.

'.37 indicates the flame nozzle, which is removably attached to the burner head, preferably by providing a threaded portion which is screwed into the lower end-of the head 35, which is interiorly threaded at that point, whereby different nozzles may be readily attached to the head according to the work to he performed. The burner head 35 is provided with an integral upwardly inclined projection 38 having a central bore, to which is connected an auxiliary burner 39, which serves to assist evaporation of the liquid fuel. If desired, a shield 40 may be employed to protect the hands or clothingl of the operator from'coutact with the auxiliary burner. which shield also serves to direct the heat from the auxiliary burner against the instrument. The shield may be clamped between the burner head 35 'und the nozzle 37, as shown in Fig. 1.

The sup ly of oxygen to the. tube is regulated lilythe disk valve 41 within the valve chamber 15.

T he outer end of the block 11 has a threaded hollow stem 42 communicating with a straight bore 43 in the block 11 the other end of this bore 43 communicating with a tube 46 within the handle 10 the forward end of this tube 46 in turn communicating with a bore 43 in the block 22 beyond which connection the bore 43 is inclined forwardly and communicates with the recess 25 in the block 22. One end of a flexible tube 44 enters the hollow stem 42 and communicates with the bore 43 being secured in place by a nut 45. The other end of the flexible tube 4t connects with a container (not shown) for the liquid fuel.

Surrounding the oxygen tube 20 between the recessed end of the block 22 and the valve casing 30 is a packing 47 of fibrous material which is wound with a wire binder 48 so that thereis a narrow space left bctween the packingr 47 and/the tube 29 for the passage of the liquid fuel which evaporates upon reaching that portion heated by the auxiliary burner 39, both gases mixing in the burner head 35.

A bevel gear 49 is supported within the sleeve 10 by a bracket 50 fixed to the oxygen tube 20 the stem 51 of the gear extending through an elongated slot 55 in the sleeve 10, and provided at its top with a head or thumb disk 52. y

This beveled gear -19 meshes with another beveled gear 53 lixed to the tube 20 whereby the tube 20 can be moved backward or forward to open or close the valve 33 thusregulating the supply of liquid fuel to the burner head 35. The longitudinal slots 32 in the collar 31 permit the passage of the liquid fuel gas into the burner head 35. The outer surface of the sleeve or handle'lO may be knurled as at 54 if desired.

Whether thek apparatus is being used for welding or cutting purposes, the operation continues as hereinbefore described, but for cutting use, a greater supply and pressure of oxygen is required, and for this purpose I provide an additional supply tube 56 for the oxygen gas, one end of which tube is connected with the burner head by a coupling within a hollow sleeve 64,2115() slidable within said opening in the block 11 having move ment between a shoulder 65. and a hollow plug 66` which is screwed into an enlarged threaded recess in the outer end of the block 1l there being a spiral spring 67 within the hollow plug 66 `and the bottom of the sleeve 64. The stem` 68 of the valve 62 passes through a stuiiing box 69, screwed upon a nipple 70,extending from the block 11.

The end of the valve stem 68 is threaded and is connected to one end of a frame 71 by a nut 72. The other end of this frame 71 1s provided with a pin 73, which enters an opening in the block 22, in which it is slidable. i

The valve 62 is operated by a. trigger 74, the upper endof which is pivotally connected to a lug 7 5, uponthe block 22 below which it is pivoted at 76, to one end ofva link 77, the other end of the link being pivoted at 78 to the frame 71.

79 indicates an orifice where a bore 80y in the block 11 enters the opening 63 in the block 11 this end of this bore 80 being noi mally covered by the sleeve 64 andl uncovcred when the trigger valve is operated, al-

lowing communication with the opening in the block 11 in which the sleeve slides. The other end of this bore 8() communicates with another bore 81 also within the block 11 which bore 81 is closed at its inner'cnd, its openother end communicating with a short section of pipe 83, the other end of which pipe is connected by a nut 82 to an elbow 84 upon and communicating with the interior of the valve chamber 15.

It will thus be seen that when the trigger valve is operated, an additional supply and pressure of oxygenv gas will be forced. intol the burner head 35 through the elbow 84, pipe 83 and bores, 81, 80, 61 and tube 5 6.

'lhe cutting nozzle 85 shown in Fig. 4 may be attached to the burner head 35, in the ,same manner as is the nozzle 37 shown in Fig. 1 but I prefer to attach the nozzle 85 to lou the burner head by means of a coupling nut 1 86, as shown in'Fig. 4.

If desired, although it forms no part of my invention, a spacing roller may be em;

LSU

ploycd, supported by an arm 88, secured to the burner head by a nut 89.

' My improved apparatus is equally well adapted for welding or cutting purposes; it is of strong construction and easily handled. The flow of gases is regulated in such manner that a proper mixture is obtained according to the work to be performed, with leconomy ot the gases.

I claim as my invention:

1. A welding and cutting apparatusyof the character described, comprising aburner head` a burner nozzle secured to one'eiid of said head, a valve casing, means connecting Vthe same to the burner head, an oxygen supply tube extending at one end into said valve casing a valve fixed to such end of the oxygen tube, a hollow handle, a

block within the forward end of the handle provided with an opening through which said oxygen tube slidably extends and recessed at one end, tubular connections between said recess and asource of fuel supply, another tube of larger diameter surrounding said oxygen supply tube between sai`d valve casing and the recessed end of said block, another block within the rear end of said handle, a bore in said second block, a valve chamber exterior of said handle with which said bore in the second block communicates, a valve in said chambenfa tube extending from said valve chamber'for connection with alsource of oxygen supply, the rear end of said first oxygen supply tube slidably entering the forward end of said bore, and means for moving said first oxygen .supply tube to seat or unseat theyvalve at its y forward end.

2. A welding and cutting apparatus of the character described, comprising a burner head. a burner nozzle secured to one end of said head, a valve casing, means for connecting the. same to the burner head, an oxygen supply tube extending at one end into said valve casing, a valve fixed to such end of the oxygen tube, a hollow handle, a block within the forward end'of the handle provided with an opening through which said oxygen tube slidably extends and recessed at one end, tubular connections between said recess and a source of fuel supply, another tube of larger diameter surrounding said oxygen supply tube between said valve easing and the recessed end of said block, a fibrous packing surroundingr the oxygen tube within said larger tube, another block within the rear end of said handle, a bore in'said second block, a valvechaniber exterior of said handle with which said bore in the second block communicates, a valve in said chamber, a tube extending from said valve chamber for connection with a source of oxygen supply, the rear end of said first oxygen supply tube slidably entering the` forward end of said bore, and means for moving said first oxygen supply tube to seat or unseat the valve at its forward end.

3. A welding and cuttingapparatus of the character described, comprising a burner head, a burner nozzle secured to one end of said head, a valve casing, means for connectn ing the same to the burner head, an oxygen rsupply tube extending at one end into said valve casing, a valve ixed to such end of the oxygen tube, a hollow handle, a block within the forward end of the handle provided with an opening through which said oxygen tube slidably extends and recessed at one end, tubular connections between Said recess and a source of'fuel supply, another tube of larger diameter surrounding said oxygen supply tube between said valve casing and the recessed end of said block, a fibrous packing surrounding the oxygen tube within said larger tube, another tubesurrounding said second tube in Contact therewith having an annular flange n# its rear end, means for securing such end to said block, another bloclcwithin the rear end of said handle, a bore in said second block, a,y valve chamber exterior of said handle with which said bore inthe second block communicates, a valve in said chamber, a tube extending from said valve chamber for connection with'a source of oxygen supply, the rear end of said first oxygen supply tube slidably entering the forward end of said bore, and means for moving said first oxygen supply tube to seat or unseat the valve at its forward end. I

Il. A welding and cutting apparatus ofthe character described, comprising a burner head, a burner nozzle secured to one end ot' said head, a valve casing, means for connecting the same to the burner head, an' oxygen supply tube extending at one end into lsaid valve casing, a valve fixed to such end of the oxygen tube, a hollow handle', a block within the forward end of the handle provided with an opening through which said oxygen tube slidably extends and recessed at one end, tubular connections between said recess and a source offuel supply, another tube of larger diameter surrounding said oxygen supply tube between said valve casing and the recessed end of said block, another block within therear end of said handle, a bore in said second block, a valve chamber exterior of said handle with which said bore. in the second block communicates, avalve in said chamber, a tube extending from said valve chamber for connection with a source of oxygen supply, the rear end of said first oxygen supply tube slidably entering the'forward end of .said bore, means for moving` said first oxygen supply tube to seat or unseat the valve at its forward end. tubular connections between the burner head and said valve chamber for admitting an additional supply of oxygen gas to the burner provided with anopening throughv which said oxygen tube slrdably extends and recessed at one end, tubular connections between said recess and a source of fuel supply, another tube of larger 'diameter surrounding said oxygen supply tube between said valve casing and therecessed end `of said block, another block within theI rear end of said handle, aubore in said second block, a valve chamber exterior of said handle with which said bore in the second block communicates,'a valve in said chamber, a tube extending from said valve chamber for connection with a source of oxygen supply, the rear end of said first oxygen supply tube slidably entering the forward end of said bore, a beveled gear secured to said first named oxygen tube Within said handle, another beveled gear meshing therewith, a

bracket attached "to `said oxygen tube andv supporting said second gear, said second gear being provided with a. shank extending through an elongated slot in the handle and .I provided with a head at its outer end by means of which said oxygen tube may be moved to seat or unseat the valve at its forward end.

6. A welding and cutting apparatus of the character described, comprising a burner head, a burner nozzle secured to one end of f said head, a valve casing, means for connecting the same to the burner head, an oxygenv f other block within the rear end of said `witha source of oxygen supply, the rear end of said first oxygen supply tube slidably entering the forward end of said bore, a beveled gear secured to said first named oxy en tube within said handle, another beve ed gear meshing therewith, a bracket attached to said first oxygen tube and supporting said second gear, said second gear being provided With a shank extending through an elongated lslot in` the handle and Vprovided with ahead at its outer' end by means of `which said first named oxygen tube may be vmoved to seat or'unseat the'valve vat its forward end, tubular yconnections between the burner head and -said'valve chamber for admitting an additionalsupply of oxygen gas to the burner head, and a valve for'controlf ling such additional supply of oxygen.

7. A. welding and cutting apparatus of the charactei described, comprising a burner head, a burner nozzle secured to one end of said head, a valve casing, means for connecting the same to the burner head, an'

oxygen supply tube extending atone end into said valve casing, a valve fixed tosuch end of the oxygen tube, a hollow handle, a block within the forward end of thehandle provided with an opening.through whichl said oxygen tube slidably extends and recessed at one end, tubular connections .be"

block,` a valve chamber exterior of said,

handle with .which said borerin lthe second block communicates, a valve in said chamber, a tube extending from said valve chamber for connection with a source of oxygen supply, the rear end of said first oxygen supply tube slidably entering the forward end of said bore, a beveled gear secured to said' first named oxygen tube within said handle, another beveled gear meshing therewith, a bracket attached to said first oxygen tube and supporting said second gear, said second gear being provided with a shank extending through anV elongated slot in the handle and provided with a head at its outer end by means of which said first oxygen tube may be moved to seat or unseat the valve at its forward end, another oxygen tube connected at one end to the burner head with its other end supported in a recess in said second block at the other end of the handle, tubular passageways leading from said recess to and communicating with the valve chamber, there being an opening in said third oxygen tube adjacent its end wit-hin said recess registering with said passageways whereby an additional supply of oxygen may be admitted to the burner head, anda valve for opening and shutting off communication between said third oxygen tube and said passageways. I,

` vv8. A weldin and cuttingy apparatus of the character escribed, comprising a burner head, a burner nozzlev secured to one end of said head, a valve casing, means for connecting the same to the burner head, au oxygen su ply tube extending at one end into said va ve casing, a valve fixed to such end of the oxy en tube, a hollow handle, a block within t e forward end of the handle provided with an o ning through which said oxygen tube sli ably extends and recessed at one end, tubular connections between said recess and a source of fuel supply, another tube of larger diameter surrounding said oxygen supply tube between said valve casing and the recessed end of said block, another block within the rear end of said handle, a bore in said second block,avalve chamber exterior of said handle with which said bore in the second block communicates, a valve `in said chamber a tube extending from said valve chamber orl connection with a source of oxygen su ply, the rear end of said first oxygen supp y tube slidably entering the forward end of said bore, means for moving said first oxygen su ply tube to seat or unseat the valve at its orward end, another oxgen tube connected at one end `to the burner head with its other end supported in a recesss in the block at the outer end of the handle, tubular passageways leading from said recess to and communicating with the valve chamber, there `being an opening in said third oxygen tube adjacent its end within said recess registering with said passageways whereby an additional suppl? of oxygen may be admitted to the burner lead,v and a valve for opening and shutting offl communication between said third oxygen tube and said passageways.

9. A welding and cutting apparatus of the character described, comprising a burner head, a burner nozzle secured to one end of said head, a valve casng, means for connecting the same to the burner head, anoxygen su ply tube extending at one end into said va ve casing, a valve fixed to such end of the oxygen tube, av hollow handle, a block within the forward end of the handle provided with an opening through which said oxygen tube slidably extends and recessed at one end, tubular connections between said recess and a source of'fuel supply, another tube oflarger diameter surrounding said oxygen supply tube between said valve casing and the recessed end of said block, another block within the rear end of said handle, a bore in said second block, a valve chamber exterior of said handle with which said bore in the second block communicates,

a valve in said chamber, a tube extendingv from said valve chamber for connection with a source of oxygen supply the rear endof said first oxygen suiplfv tube slidably entering the forward .en o said bore, means for moving. said first oxygen supply tube to seat or unseat the valve at its forward end, another voxygen supply tube, means for securn one end thereof to the burner head, vsaid tu extendin through an opening in the block in the orward end of the handle, its other end being fitted into a recess in the block in the other end of the handle and provided with an opening in register withl a bore in said block, said block being also provided with other bores communicating with said first bore, tubular connections bel tween the open end of one of said bores and said valve chamber, a valve slidably supported in an opening in said block, a slidable sleeve forming a seat for said valve, a spiral spring in contact with said sleeve, a trigger,and means connected therewith by which sleeve is depressed against the tension of said spring wherebyV communication is established between said bores in the second block and the opening in said third oxygen tube for the admission of an additional supply of oxygen gas to the burner head.

. 10. A welding and cutting apparatus'of the character described, comprising a burner head, a burner nozzle secured to one end of said head. a valve casing, means for connect.- ng the same to the burner head, an oxygen supply tube extending at one end into said valve casing, a valve fixed to such end of the oxygen tube, a hollow handle, a block within the forward end of the handle provided with an opening through which said oxygen tube slidably extends and recessed at one end, another tube of larger diameter sur,- rounding said oxygen supply tube between said valve casingy and the recessed end of said block, another block within the rear end of said handle, a bore in. said second block, a valve, chamber exterior of said handle with, which said bore in the second block communicates, a valve in said chamber, a tube extending from'said valve chamber for connection with a. source of oxygen sup ly, the

rear kend of said first oxygen supp v tube f slidably entering the forward end of said bore, means for moving said first oxygen supply tube to seat or unseat the valve at its forward end, a bore in said first block with one end communicating with the said recess in such block and the interior of said tube surroundingsaid first oxygen tube, an other bore in said second block, means connected with the rear end of such bore for 'connection with a sourceof fuel supply, and a tube extending fromvsaid bore in the first block to said second bore in the second block and communicating with both said bores` the fuel supply being conducted from its source through said connections with said second bore inthe second block and through said bore' into and through said tube and from said tube into and through said bore in the first block. a

11. A welding and cutting apparatus of said head, a valve casing, means for connecting the same to the burner head, an oxygen supply tube extending at one end into said valve casing, a valvefixed to such end of the oxygen tube, a hollow handle, a block within the forward end of the handle provided with an opening through which said oxygen tube slidably extends and recessed at one end, another tube of larger diameter surrounding said oxygen supply tube between said valve casing and the recessed end of said block, another block within the rear end of said handle, a bore in .said second block, a valve chamber exterior ot' said handle with which said bore in the second block communicates, a valve in said chamber, a tube extending from said valve chamber for connection with a source of oxygen supply, the rear end of said irst oxygen supply tube slidably entering the forward end of said bore, means for moving said first oxygen supply tube to seat or unseat the-valve at its forward end, a bore in said first block with one end communicating with the said recess in such Iblock and the interior of said tube surrounding said first oxygen tube, another bore in said second block, means connected with the rear end of such bore for connection with a source of fuel supply, a tube extending from said bore in the first block to said second bore in the second block and communicating with both said bores, the fuel supply being conducted from its source through said connections with said second bore in the second block and through said bore into and through said tube and from said tube into and through said bore in the first block, another oxygen supply tube, means for securing one end thereof to the burner head, said tube extending through an opening in the block in the forward end of the handle, its other end being fitted into a recess in the block in the other end of the' handle and provided with an opening in register with a bore in said block, said block being also provided with other bores communicating with said first bore, tubular connections between the open end of one of said bores and said valve chamber, a valve slidably supported in an opening in said block, a slidable sleeve forming a seat for said valve, a spiral spring iu contact with said sleeve, a trigger, and connected means by which said opening is brou ht into register with the open end of said rst bore a ainst the tension of said spring, thereby esta lishing communication between the burner head and valve chamber for the admission of an additional supply of oxygen gas to the burnerhead. y y

12, A welding apparatus comprising a burner head forming a mixing chamber, a flame nozzle attached to the lower end thereof, an auxiliary burner projecting` from the burner head, tubular passagewaysV between the burner head and a source of liquid fuel supply, an oxygen tube in communication with the burner head and a source of oxygen supply, a valve for admitting and controlling the supply of oxygen t0 said tube, a valve fixed to the end of said tube adjacentthe burner'head, means for giving said oxygen tube a backward and forward movement to operate said second valve and control the admission of liquid fuel to the burner head, said auxiliary burner acting to preheat and vaporize the liquid fuel. 13. A welding apparatus comprising a burner head forming a. mixing chamber, a flame nozzle attached to the lower end thereof, an auxiliary burner projecting from the burner head, tubular passageways between the burner head and a source of liquid fuel supply, an oxygen tube passing through one of said passageways and in communication with the burner head and a source of oxygen supply, a valve for admitting and controlling the supply of oxygen to said oxygen tube, a valve fixed to the end of said oxygen tube adjacent the burner head, means for giving said oxygen tube a backward and forward movement to operate said second lvalve and control the admission of liquid fuel to the burner head, said auxiliary burner acting to preheat and vaporize the liquid fuel, and also to preheat the oxygen before it enters the burner head and. mixes with the vaporized fuel.

14. A welding andcutting apparatus comprising a burner head forming a mixing chamber, a. fiame nozzle attached to the lower end thereof, an auxiliary burner projecting from the burner-head, tubular passageways between the burner head and a source of liquid fuel supply, an oxygen tube in communication with the burnei` head and a' source of oxygen supply, a valve for admitting and controlling the supply of oxygen to said oxygen tube,a valve fixed to the end of saidtube adjacent the burner head, means for giving said oxygen tube a back ward and forward movement to operate said second valve and control the admission of lio liquid fuel vto the burner head, said ,auxiliary burner acting topreheat and vaporize the liquid fuel, means for supplying an additional quantity of oxygen to the burner head, and means for regulating such sup- 15.l A welding and cutting apparatus comprising a burnerl head formm a mixing chamber, a flamenozzle attache to the lower end thereof, an auxiliary burner projectditional quantity of oxygen to the burner 10 head, al valve for controlling such supply, and :l trigger for operating Such valve.

Signed by me this 6th day of February, 19:28.

FREDERICK W. BECKER. 

